Adding properties:

- enable indexing missing properties

src/main/resources/hapi.properties

@@ -13,9 +13,10 @@ fhir_version=R4
 # accessible from the server itself.
 server_address=http://localhost:8080/hapi-fhir-jpaserver/fhir/
 
-auto_create_placeholder_reference_targets=true
-enforce_referential_integrity_on_write=true
-enforce_referential_integrity_on_delete=true
+enable_index_missing_fields=false
+auto_create_placeholder_reference_targets=false
+enforce_referential_integrity_on_write=false
+enforce_referential_integrity_on_delete=false
 default_encoding=JSON
 etag_support=ENABLED
 reuse_cached_search_results_millis=-1